For noobs this will probably not be an issue, but for some of you old guys, you'll notice, in your profile, you have just got yourself a classic.

Here's how to change it:

Viewing on a desktop/laptop, go to your avatar at the top and select 'User Control Panel'. Then select profile tab and your year drop down is in there.

Same for viewing on smart phone or tablet, except you access your 'User Control Panel' by clicking on the 'Hamburger' menu (the three horizontal lines in a box) top right and selecting the drop down from the 'Hello 'your username' drop down.